A trash fire at a recycling center in Clackamas County is sending large amounts of smoke throughout the area, and affecting visibility along Oregon 212 and Interstate 205.

Clackamas Fire responded to a commercial fire alarm around 4:30 a.m. at KB Recycling, located at 9602 SE Clackamas Rd., Clackamas Fire said in a release.

Crews found a large trash pile on fire and called in additional units, the release states. With a large amount of debris and difficult access, the fire went to a second alarm around 8 a.m. to bring additional crews.

Firefighters are using heavy equipment to pull out some of the burning material. The fire has not spread outside the recycling center, but is sending large amounts of smoke in the air that is drifting across Interstate 205 and Oregon 212.

Authorities are urging drivers to be cautious and advised people to stay indoors if they have any respiratory issues.

Crews expect to be at the scene for several hours. Investigators are looking into the cause and extent of damage.